See Also: rarefaction(medicine)
rarefaction(dictionary)

rarefaction (iou)



rarefaction noun. E17.
[medieval Latin rarefactio(n-), from Latin rarefact- pa. ppl stem of rarefacere: see RAREFY, -FACTION.]
The action of rarefying or process of being rarefied; lessening of density. Now chiefly of the air or gases, or (Medicine) of (the X-ray appearance of) bones. E17.
An instance of this. M19.
rarefactional adjective characterized by rarefaction E20.